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Matheus
6c65a90a5f
mm_fork_context() currently maps shared chdev mappings 1:1 when forking a range. The issue with this approach is that chdev mappings are not guaranteed to be backed by physical memory, and thus cannot safely be refcounted. This can lead to issues on devices with more complex buffer lifetimes. To allow for internal book-keeping, do not map shared chdev memory on fork and instead allow it to go through the entire fault-in process again.